20.7
08/27/1985
RPI 775
The letters patent expired on 04/18/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 08/27/1985. We update with every new RPI gazette, published weekly.
Applicants
E. C. (pessoa física)
Inventors
B. E. (pessoa física)
R. E. (pessoa física)
IPC Classification
Priority claims
US
934.102 · 08/15/1978
Publications in the Brazilian Industrial Property Gazette (RPI).
08/27/1985
RPI 775
#16.1
01/31/1984
RPI 693
#13.1
11/08/1983
RPI 681
#9.1
07/12/1983
RPI 664
#6.1
12/21/1982
RPI 635
#4.1
05/18/1982
RPI 604
#21.1
04/18/1995
RPI 1272
From the same holder
Same category
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